A Morphological Study on the Preparation of PolyHEMA Beads

Poly(hydroxyethylmethacrylate)(polyHEMA) beads were prepared by suspension polymerization and the effects of 1-octanol and PVP(poly(N-vinyl-2- pyrrolidone) K-90) were investigated on the shape, size distribution, porosity and average pore radius of polyHEMM. As the concentration of 1-octanol increased, the shape became irregular and the average bead size centration. The effect on the whole shape was not significant but it maked the density of microsphere on the surface very lower.